Odd plug hole behaviour in shower!

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Hi All,

I have an oddly behaving shower plug hole. New house(to us, bathroom about 7 years old I think)

I have already plunged for England, dropped an entire bottle of Mr Muscle down it an another unblocker.

So what happens is you turn the shower on, the tray begins to fill up and gets to about an inch or 2 deep and then suddenly it empties away and for the rest of the shower it flows out as it should. Really odd.

Any ideas, air block of some sort?


Cheers!

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Cant even get my finger in the hole, let alone a snake. Taken the hair trap out needless to say!

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Ive found mine

http://www.taps4less.com/PP/JT-G1600800.html



Although the hair trap isnt as deep.

Looks like I need to remove the waste apperture to get to the actual hole, then I could plunge / snake / finger it ;-)

I had already tried to turn this, but it only has two notches so to speak, almost like it needs a specific tool, but maybe 2 people, 2 large flat heads?

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Removal of hair trap doesnt affect mine, its a smaller trap than that one and has no impact on the water flow (mine basically fills a hole up and then overflows into the pipe out/actual plug hole at the top of the hole if that makes sense.

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Unscrewed my aperture (think thats what its called) top bit anyway. It was sealed in so hurt my fingers unscrewing it - ouch(seems there is a tool to grab the two notches)

Didnt gain anything other than I realised there was a rubber seal there and if I wasnt careful I could get myself in trouble with a) not getting it sealed back up properly and b) not being able to thread it back up - as it was I had to fashion a tool from a coat hanger to llift the plug hole up and thread it back.

Im sure putting all of this together is easy when you are have access underneath, but when all youve got is access via the plug hole its not so straight forward so I put it all back together making sure to seal up very well! At least I know how to fix it if I get a water mark downstairs in a few weeks!